Indicator-lock.



A. L. ANDRUS & E. E. RAUSE.

INDICATOR LOOK.

APPLIGATION FILED MAY 31, 1906.

' Patented Feb. 23, 1909.

2 SHEETS-SHEET l.

Witmeooe o A. L. ANDRUS 61: E. E. RAUSE.

INDICATOR LOCK.

APPLICATION FILED MAY a1, 1906.

913,448. PatentedFeb. 23, 1909.

Z SHEETS-SHEET 2.

Fi -.5. I.

UNITED sit M raw? fit itiii ADEN L. ANDRES AND EDWARD E. RAUSE, OF NEWBRITAIN, tUNNl ltTliCU'l, ASSIGNilliB Ti RUSSELL & ERWIN MANIT'FMTURING(IOMPAN PORATION OF CONNECTIQ 7}.

Y. ()1 NEW BRITA IN. (ONNECTICUT A (91% INDICATORiDCK.

I Application filed Kay 31,

Specification of Letters Patent.

States, residing at'New Britain, Connecticut,

5 have invented certain new and useful l1nprovements in following is :1full, clear. nnd exuet tion.

()ur invention relates to improvements in locks, and pnrticulnrlyhotelrooms.

The object of the invention is to provide :1 simple mechanism by which:1 person on the outside may readily determine whet room is occupied ornot.

descriplndientord.loeks, of which the locks lor the doors oi Inseerlnined without the necessity of attempting to open [tis customarywhen a person enters n hotel room to lock the door iron] the inside orat least insert the key in the lock :11 once. 'la kurg mlvantnge oi forinstance, at maid, uury ascertain it the room 18 occupied, and,consequent ly, whet her to attempt to open the door or not.

7 this practice we huve I 20 provided nsimple device by wluch 11 person.

' and 17.

The accompanying two sheets ot' dv-nwiugs illustrate the preferred formof our iui'eutiou. Figure l is on elevation 11in fragment of :1 doorhaving n lock with escutelieou :1ud indicntor embodying the improvementsof our invention. Fig. 2 is an edge view of the some part being brokenkey inserted in the inner keyhole. mid the indicator co-nctingtherewith. Fig. 3 is a detail view showing 11 fragment of a key and theindicator in section. Fig. -t is sectionnl view of the indicator in theposition it would occupy when pressed in when the key is absent. Fig. 5is n detail sectional .viow of the iudicntor housing or beuriug. Fig. 6shows side elevations of the movable members 01'' the indicator. Fig. 7shows the spriug for the indicator.

1 is a. fragment of at door.

2 indicates the face plate of the lock whieh is of the mortise type.

3 and 4 are the escuteheou plnles ol suitable design secured to theopposit the door.

5 is it looking and retracted by an bolt adopted to be extended suitablemenus, for e.\'-- ample a key insertec in the key-hole 6 at the outerside of the door. 7 is a second locking; bolt adapted to be ext endedand retracted by Ti'lfi y'such S 3 inserted through a key-hole It 'lhisscrew prefernblv has n concave whi 'h serves to center the tip of it keywhen away to show the 11 detail I from the exterior will know instantlyupon Patented Feb. 23, mos. i

Serial No) 319,469.

at the inner side oi the door. it is intended that both locking boltsshall be operated by 5b the same guest key.

it) is nu ordiunry spriugnessed hitch bolt ndnpted to be retrneted byeither of the knobs H or if us is customary.

(ousidernhle nnnoynnce is often occnsioned the ot'ellpnnta wi' 11 roomby servants trying the door from the exterior. ()ur invention provides nsimple menus by which it can be whether the room is occupied the door.

13 is n button or plunger supported in the housing or plunger guide 14and normally pressed Ul,lt\\'ttl'(l by n spring 15 which is loentedbetween the :tbutments orshouldors it) '1' The housing is held in theouter any suitable manner.

angular end the escutcheon plnte l in 1% is t wnsher cniiled by the l.)of the plunger or button for limiting outwzu'd movement thereof.

it) is it screw inking into n tnpped hole in the inner end oi theplunger or button 13. hend us 3 and e iudicnted in dotted lines in Figs.

it is inserted in the. lock from the inner side of the door.

Norunilly, the indicator ports are in the position shown in Figs. 2. and3. The presence of the key in the position shown in these liguresprevents the rlunger or button 13 from being operated. person trying thebutton a iplymg n slight pressure to the button w tether the key is inthe lock or not in other words whether the room is occupied. When thekey is not in the lock the button may be pushed in as shown in Fig. 4;in other words it i.. tree. to move. The screw 20 serves as onndjustnble extension to the button so that the same indientor may beadopted to doors i of dillerent thicknesses and to escutcheon or e sidesof side plates of diil'erent thicknesses nud still co-nct properly withn key when inserted in the inner key-hole, 9.

From the foregoing it 'will be seen thut the indicator device is onethat is rnnnunlly set by that not which causes the locking of the door.it is likewise nuinutill rend; thut is, it is read by the sense offeeling. This is of partieubn' ndvantnge because such doors as it is maybe presse along desirable to have indicators upon are usually oorlylightedv corridors. when t e plun or or indicator is movable or 51 in itwould indicate that the room is unoccupied; whereas, when it is lockedagainst movement it would indicate it is 00011 )ied.

What claim is:

1. A construction of the character described com rising the combinationof a lock having two ocking bolts and separate keys holes on oppositesides out of line with one another for the insertion of keys for theoperation of said bolts and a manually operable indicating devicelocated opposite one key-hole for determining the presence or absence ofa key in said ke -hole.

2. In a 100 provided with a key-hole, a locking bolt and a manuallyoperable indicating device having a projecting exposed portion andlocated opposlte the key-hole for determining the presence orabsenceof akey therein.

3. In a lock mechanism, the combination of a lock casing and a lockingolt adapted to be operated by a key inserted in the key-hole and amovable indicating device having a 1projecting exposed portion and inline wit the key-hole adapted to be engaged by the key inserted therein.

4. In a lock mechanism, the combination dicating device adapted toprotrude from'the opposite side for manual engagement.

6. In a construction of the character de- As shown,

Having a key-hole on one side v aware scribed, the combination of a lockhaving two bolts, two sideplates each having a keyadapted to co-act witha key inserted in one of said key-holes.

7. In a look, a bolt adapted to be operated by a key, an indicatingdevice adapted for manualengagement and an adjustable extension carriedby said indicating device for the purpose specified.

, 8. As an article of manufacture, an indi cating device for akey-operable-lo'ck com prising a housing, a' spring-pressed plungercarried thereb and an ad'ustable extension member mova le with saidplunger and having a key-seat. j,

9. In an indicator for looks, the combination with a lock and anescutcheon plate, of a spring pressed plunger carried by the escutcheonplate inthe plane of the key hole in the lock, and ada ted to coact witha key inserted in said key ole.

10. In an indicator for looks, the combination with a lock' and. an"escutcheon plate, of a housingsecured to the escutcheon plate in theplane of the key hole in the lock, and a plunger mounted in said housingand adapted to coact with a key by the insertionof said key in said keyhole.

1]. in a lock mechanism, the combination of a bolt, meansfor o eratingthe bolt from the inner side of the ock, and a movable indicating deviceseparate from said bolt-operating means, adapted to protrude from theopposite side for manual engage- .ment. ADEN L. ANDRUS EDWARD E. RAUSE.Witnesses M. S. WIARD, CHAS. E. RUssELL.

